DO가 Discourse 호스팅 플랜에서 SMTP를 비활성화하는 것 같습니다

[supermathie (Michael Brown)]

Digital Ocean이 기본적으로 아웃바운드 포트 25를 차단해 온 것은 이미 수년째 이어져 온 일입니다. 이는 전혀 새로운 일이 아닙니다.

Matt가 여기에 잘 설명하고 있습니다:

Proposed changes to discourse-setup because Digital Ocean blocks outbound smtp

OK then, let me give you the full spiel, then: Port 25 outbound is an obvious candidate for filtering, because if you can hit the Internet on port 25, you can deliver e-mail to practically anyone. If that e-mail is unwanted, the only useful “identity” information that the recipient has to try and prevent further abuse is the sending IP address. That identity is tied, in general, to a hosting provider, not an individual subscriber, so any reputation hit for spamming goes, in the first instanc…